APPLIED: [SRU Bionic 0/3] (LP: #1920995) selftests: bpf verifier fails after sanitize_ptr_alu fixes

[Tim Gardner]

Applied to bionic/master-next. Thanks.

-rtg

On 3/23/21 6:43 PM, Thadeu Lima de Souza Cascardo wrote:
> BugLink: https://bugs.launchpad.net/bugs/1920995
> 
> [Impact]
> bpf selftests will fail after applying fixes from 4.15.0-140.
> 
> [Fix]
> Apply selftests fixes and bpf verifier simplification and hardening.
> 
> [Test Plan]
> Ran the verifier test and other tests for the latest BPF fixes.
> 
> [Potential regression]
> BPF programs that worked before may stop working or, worse, programs that
> should not be allowed may start working.
> 
> Piotr Krysiuk (3):
>    bpf: Simplify alu_limit masking for pointer arithmetic
>    bpf: Add sanity check for upper ptr_limit
>    bpf, selftests: Fix up some test_verifier cases for unprivileged
> 
>   kernel/bpf/verifier.c                       | 21 ++++++++++------
>   tools/testing/selftests/bpf/test_verifier.c | 27 +++++++++++++++------
>   2 files changed, 32 insertions(+), 16 deletions(-)
> 

-- 
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Tim Gardner
Canonical, Inc